Benefits and pitfalls in the longitudinal assessment of the somatosensory cortex post-stroke using EEG

Somatosensory cortex plays an important role in motor planning and execution.<br/>After ischemic stroke, both afferent projections to sensory cortices (S1/2) and sensory projections to motor cortices are often affected. Changes in S1 are particularly interesting for our understanding of stroke recovery and rehabilitation strategies. The...

Disentangling somatosensory evoked potentials of the fingers: Limitations and clinical potential

In searching for clinical biomarkers of the somatosensory function, we studied reproducibility of somatosensory potentials (SEP) evoked by finger stimulation in healthy subjects. SEPs induced by electrical stimulation and especially after median nerve stimulation is a method widely used in the literature. It is unclear, however, if the EEG...

EEG as an imaging tool: which inverse method can successfully disentangle sources in proximity?

The accuracy of EEG source localization depends on the choice of the inverse method, the resolution of the forward model, and the signal to noise ratio (SNR) of the recordings. Since we are interested in disentangling sources in proximity, the goal of our study is to examine the sensitivity of spatial resolution of EEG source reconstruction to a...